# Set of Real Numbers Symbol (ℝ)

The set of real numbers symbol is the Latin capital letter “R” presented with a double struck typeface. The symbol is typically used to express that a variable is a member of the set of real numbers:

In plain language, the expression above means that the variable is a member of the set of real numbers.

Symbol Format Data
Unicode
8477
TeX
\reals
SVG

## Usage

The set of real numbers contains the set of rational numbers as well as irrational numbers like pi, e, and the square root of two.